Packer



July 14, 1931. A. BoYNToN 1,814,117

PACKER Filed oct, 19.. 1925 lNvcNToR A. Boynton,

BY WITNESS! y; @La Km ATTORNEYS Patented July 14, 1931 UNITED. STATESy ALEXANDER BoYN'romoF SAN AN'roNio, 'riixiis PACKEB Application led ,Qctqbuer 19, `Sierial No. 63,4516.

. This invention relates to a packer for use with `oil wells and has a variety of applications although being especially advantageous when used with the well cementing apparatus forming the subject-mattei' of my copending application, Serial Number 59,887.

The object of the invention is to provide a packer which when provided on a well casing will operate to prevent shale or other cavey materials occurring above producing formations in wells from migrating along the outside of the liners of the well. Loose shale and other cavey material is arrested in its downward movement by these packers which are so spaced as to come in contact with the harder formations of the well wall. Another object of the invention resides in the provision of a packer which may be used 'to advantage in cementing one stringwells;

that is, wells where the casing and liner are of the same size. prevent the downward migration of the cement and, of course, to accomplish this function it is necessary to use in conjunction with the packers a plate inserted in the casing opposite the packers for the purpose of preventing the cement from going down inside the casing. u Y

Another object of the invention is to provide a packer or sealing member of ysuch character that when two or more of successively increasing size are mounted on a well casing they will shear off the formation making up the wall of the well so as to cause an impaction of the formation and thereby pro?.

vide natural packing alongv with the artificial packing provided by the packing mem-4 r. Another object of the invention resides in the provision of a device of this character which has these advantages, is of simple and durable construction, reliable and effective in operation, susceptible of application to the ordinary well casing or tubing, and easy and comparatively inexpensive to Amanufacture.

willbe hereinafter more fully described and When so used the packersparticularly pointed out in the appended claims,reference'beingshad to the accom- 1 )a'nyin-gl drawings' forming a 4part of this specification, and in which Figure l is |a View in section on the line designates ithe cylindricalbody portion or f relatively large ring member of. the packer,

the body portion l being ldesigned to `be snugly fitted on Athe casingor Itubing and being held theretoby set screws 2. The belting washers, or washers of other flexible and pliable'material, are designated at 3 and 4c and are'pjlaced ag'ai'nstth'e upper side of the cylindrical bodygportion l. Preferably the washers 3 and 4 have external diameters of different sizesI so las" to present the stepped formation Lshown in l,Figure l. To the upper side v of the washer1 4 aretaining ring inembei'v 5 of soft Abrass is applied. The fedge of the ring 5 adjacent'the washer 41: is rounded off as .shown at i5a. are .compressed and hield between the ring members l and means of nails or bars 6 having shanks '7 passing up through alignedy holes in the ring member 5, the washers land f3 and ythe ring member 1. Each nail or bar `(S has a head 8 engaged with ythe ring member 5 and has its terminal or outer endportion outwardly curved, kas at 9, and fitted `against a shoulder 10 vprovideigl by a wall of an opening 11 which commu'- Y nicates with therespective slot l2 in the ring member :1. The slots are formedlongitudinally of the ,body land upon the inner periphery. The nails 6 are inserted in the slots 1 2Vand openings 11, in the latter of .which Ythey are bent around or clinched upon the shoulders 10 prior to being cut flush. rPhe pressure would cut the upper washer' 4in two and to 'preventthis the bottom edge 'i The Washers 3v and L of the ring is rounded at 5a, as already stated.

It is to be observed that the body l comprises both the element that receives a tube around which a packing is to be constructed, and a mounting for the washers and the clamping means thereof. The nails 6 transiX the body in the direction of the axis, and when the washers, ring and nails are assembled upon the body l the resulting packer constitutes a unit construction.

An important feature resides in the formation of the washers. These are progressively larger, and as shown in'lligure l the washers become larger in the upward direction. The advantage of this construction is this: Material sloughing off of the sides of the bore will settle upon the upper washer 4. The weight of the material will tend to bend the washers, but the freedom of bending is limited by the neXt smaller washer which acts as a brace.

`With this arrangement the packer or sealing member may be securely and rigidly fixed onto the well casing or tubing and the washers are so supported and mounted as to be adapted to shear off the formation of the well hole and obtain the desired packing action and yet are permitted to partake of a limited and desired degree of flexure.

What I claim is:

l. A packer for use on the outside of a well liner comprising a body fitted on the outside of the well liner, means carried by ripheries 0f the washers extend in progressively stepped relationship, a ring to bear on the uppermost washer, and a plurality of means transiXing the ring and washers, and the wall of the body in the direction of the axis of the packer to clamp the parts together.

4. A packer comprising a tubular body, and a plurality of ringwashers applied to onev end of Ithe body and having openings constituting a continuation of the bore of the body to leave an'unobstructed central passage, said Washers being progressively larger in one direction to assume a progressively outstanding stepped relationship.

ALEXANDER BOYNTON.

the body for fastening it to said liner, a y

plurality of superimposed flexible and pliable washers of successively increasing diameter being positioned on top of the body and projecting outwardly therefrom, a relatively small ring member engaged with the top of the uppermostwasher, and nails passing through the upper ring member and the washer, the body havingslots through which the nails extend and having openings in its lower portion communicating with the slots of the body, said nails having their lower portions outwardly offset and engaged with said openings, whereby the nails are secured in position.

2. A packer comprising a cylindrical body with slots having openings at one edge furnished with shoulders, a plurality of washers applied tol/the other edge of the'body, a ring on-theuppermost washer, and headed mea-ns transiixing the ring and washers eX- tending along the slots and being bent around the shoulders to maintain a clamped connection ofthe washers.

3. K A packer comprising a plurality of flat, pliable washers progressively larger in one direction superimposed upon each other, a cylindrical body upon one edge of which the washers are applied so that the bores of the washers and body vsubstantially coincide and beyond the sides of which the pe- 

